fix: add offset to quick panel drag item to avoid cursor cover icon

添加纵向偏移,避免小图标被鼠标指针图标遮挡

PMS: BUG-293867
Log:

Author: BLumia

panels/dock/tray/quickpanel/DragItem.qml

@@ -107,6 +107,7 @@ Item {
         Loader {
             active: isFallbackIcon && root.dragItem.DQuickDrag.isDragging
             anchors.centerIn: parent
+            anchors.verticalCenterOffset: -root.fallbackIconSize.height / 3 * 2
             sourceComponent: ShellSurfaceItemProxy {
                 shellSurface: root.fallbackDragImage
                 width: root.fallbackIconSize.width